BlackHole for MAC

Free virtual audio driver for Mac that passes sound from one app to another with zero added latency.

BlackHole Overview

BlackHole is a free virtual audio driver for Mac that passes sound from one app to another. It appears in macOS as an extra audio device: send any app's output to BlackHole and pick BlackHole as the input in another app, and the audio flows between them with no added latency. That makes it possible to record your Mac's sound, play music or a DAW into a video call, or route audio between music apps. BlackHole is made by Existential Audio, and its source code is released under the GPL-3.0 license.

BlackHole comes in 2, 16 and 64-channel versions, works with macOS 10.10 Yosemite and newer on Apple Silicon and Intel Macs, and needs no kernel extension or change to your Mac's security settings. The official installer is free; the download page asks for an optional donation.

Key Features

BlackHole has no window of its own: you set it up in Audio MIDI Setup and in your apps' audio settings.

  • App-to-app audio: send the sound of one app into another as an input.
  • Zero added latency: the driver adds no extra delay.
  • Channel versions: 2, 16 and 64 channels, with 128 and 256 channels available when building it yourself.
  • Sample rates: from 8 kHz up to 768 kHz.
  • Record system audio: combine BlackHole with your speakers in a Multi-Output Device to hear and record at the same time.
  • Works with any app: GarageBand, Logic Pro, Audacity, OBS, Zoom, Google Meet and more.
  • No kernel extension: no changes to your Mac's security settings are needed.

What’s New in Version 0.7.1

BlackHole 0.7.1 is a small update to the installer and driver.

  • Better permissions for the installer's preinstall and postinstall scripts
  • The firmware version is now taken from the driver's version number

BlackHole FAQ

Is BlackHole free?

Yes. The official BlackHole installer is free to download; the download page asks for an optional donation. Its source code is released under the GPL-3.0 license.

What is BlackHole used for?

BlackHole passes audio from one app to another. Common uses are recording your Mac's sound, playing music or a DAW into a video call, and routing audio between music and streaming apps.

How do I record my Mac's system audio with BlackHole?

Open Audio MIDI Setup and create a Multi-Output Device that includes BlackHole and your speakers or headphones, then use it as your sound output. In your recording app, choose BlackHole as the input.

Why can't I hear anything after choosing BlackHole as my output?

BlackHole only passes sound to other apps; it does not play it through your speakers. To hear the audio too, use a Multi-Output Device that combines BlackHole with your speakers or headphones.

Which BlackHole version should I choose: 2, 16 or 64 channels?

BlackHole 2ch is enough for normal stereo audio, such as recording your Mac's sound or using it in a video call. The 16 and 64-channel versions are for routing many separate channels between music apps.

Which macOS version does BlackHole need?

BlackHole works with macOS 10.10 Yosemite and newer, on Apple Silicon and Intel Macs.

Does BlackHole add delay to the audio?

No. BlackHole adds zero additional latency to the audio passing through it.

How do I uninstall BlackHole?

Existential Audio offers an uninstaller for each version on its website. You can also delete the BlackHole driver from /Library/Audio/Plug-Ins/HAL and restart Core Audio, as described on BlackHole's GitHub page.

Is BlackHole safe to install?

Yes, when you get it from Existential Audio's website, which is where the download button on this page leads. BlackHole needs no kernel extension and no change to your Mac's security settings, and its source code is public on GitHub.

Where does the BlackHole download on blackhole.FULLMAC.app come from?

The download button leads to Existential Audio's official BlackHole page at https://existential.audio/blackhole/. blackhole.FULLMAC.app does not change or repackage the installer.

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